diff --git a/misc/analyze_cache.py b/misc/analyze_cache.py
index 0a05493b77a3..f67e9b0ba753 100644
--- a/misc/analyze_cache.py
+++ b/misc/analyze_cache.py
@@ -77,6 +77,8 @@ def pluck(name: str, chunks: Iterable[JsonDict]) -> Iterable[JsonDict]:
 
 
 def report_counter(counter: Counter[str], amount: int | None = None) -> None:
+    if amount is None:
+        amount = len(counter)  # default to the length of the counter if `amount` is None
     for name, count in counter.most_common(amount):
         print(f"    {count: <8} {name}")
     print()
diff --git a/mypy/mro.py b/mypy/mro.py
index f34f3fa0c46d..01786c659428 100644
--- a/mypy/mro.py
+++ b/mypy/mro.py
@@ -32,8 +32,7 @@ def linearize_hierarchy(
         return info.mro
     bases = info.direct_base_classes()
     if not bases and info.fullname != "builtins.object" and obj_type is not None:
-        # Probably an error, add a dummy `object` base class,
-        # otherwise MRO calculation may spuriously fail.
+        # If no base classes are found, and obj_type is provided, we use obj_type to provide a base.
         bases = [obj_type().type]
     lin_bases = []
     for base in bases: